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Finding the Fourth Proportional to 376,989.84, 520,257.24 and 215,897.04

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Solution

The fourth proportional to 376,989.84, 520,257.24 and 215,897.04 is: 297,944.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,989.84 : 520,257.24 = 215,897.04 : x
  2. Step 2: Convert to fraction form
    376,989.84/520,257.24 = 215,897.04/x
  3. Step 3: Cross multiply
    376,989.84x = 520,257.24 × 215,897.04
  4. Step 4: Simplify right side
    376,989.84x = 112,321,998,154.57
  5. Step 5: Solve for x
    x = 112,321,998,154.57/376,989.84
  6. Step 6: Final answer
    x = 297,944.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.